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公开(公告)号：US12146552B2
公开(公告)日：2024-11-19
申请号：US18265557
申请日：2022-08-03
Applicant: NSK LTD.
Inventor： Yasumi Watanabe , Ryo Segawa , Tomoko Miyamori
Abstract: The nut has a first fitting surface provided with a first retaining ring groove on an end portion on the other side in the axial direction; the fitting cylinder, at an end portion on the one side in the axial direction, has a second fitting surface provided with a second retaining ring groove in a portion facing the first retaining ring groove with regard to a radial direction; and the retaining ring is engaged so as to span between the first retaining ring groove and the second retaining ring groove.
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